This manga is exactly about people who can't function like regular human. Hence they need to go to the free school. You're missing the point of the manga.
From Twitter: Tougou from when she has not found out about Sayama's true personality yet
Source: https://twitter.com/nmnk2020/status/1251432044653015043
It's interesting how people are more forgiving of the rape in this case. Is it because of the power dynamics? Because they are both girls, they have equal standing. Technically it's implied that Tougou can push Sayama away, but she didn't.
In reality, a lot of women decided to stick to men they don't even like, just for "protection". Haru is a brave one. She could've had it easier if she sold herself to Chiba. What a strong woman.